I think I'm not the only one who finds that a medic class would add more tactic to this fine game. Here are some thoughts to talk about in this topic and to act as help for developers implementing this class:
for Humans:1) A
Healing Pack can be bought (like Battery Pack or Jet Pack), which takes away a large amount of space on the body. The one who buys a
Healing Pack cannot wear armor. It gives an aura to the player, that heals friendly players in the vicinity.
2) A
Healing Kit which acts as a weapon, but it fires a weak, constant beam that heals friendly units (or foe alike, if it would be too overpowered that way). And perhaps cannot damage Aliens.
for Aliens:1) A
Healer Class can be added, so players can evolve to a healer, if they wish. The
Healer Bug should have a better name (

), and is a medium sized bug that can (or cannot, depends) climb walls. It would have huge health points, more or equal to Tyrants. Can only attack Humans by touching them (like Dretches do), but can fire a chain-healing beam, that bounces on to 3 or more fellow Aliens in the vicinity, healing the first one for let's say 150 HP, the second one for 100 HP and the third one for 50 HP (or something like that). The
Healer Bug has a health regeneration greater than the other Alien classes, but a smaller than Tyrants do. In compensation, he trades his own health for healing the other Aliens.
2) The
Healer Class can also be made like a bug that uses healing aura (like Tyrants do), but with fewer hit points, slower movement and perhaps when he dies, friendly Alien creatures in the vicinitiy of his aura lose health or their normal health regeneration is fully stopped for a short time or, they have health DEgeneration for a few seconds or so.
3) Another idea for a
Healing Class: Just like
number two 2) but healing can only take place when bug acts like a forward booster (so he must be stationary). In that case, he should have more health points or speed.